A long-standing festival in Zurich next month will once again be used to predict how the weather will turn out over the coming spring and summer.

Sechselaeuten, Böögg

The annual Sechseläuten (or “Sächsilüüte” as it is known in local dialect) is a kind of combination of Britain’s Bonfire Night and America’s Groundhog Day as a snowman is burned on a giant bonfire at the height of the festivities.

In a uniquely Swiss twist however, the snowman’s head is packed full of fireworks.  The time it takes between the fire being lit and the fireworks being set off is then used to forecast the weather for the spring ahead.

The snowman in question (and he’s a flammable 3.4m/11 feet high effigy of a snowman, not an actual snowman) is known as “Böögg” – a name probably related to the word “bogeyman” and similar character in other countries. The burning of the Böögg serves to drive out the winter and herald the spring.

The Swiss timing on the Böögg’s head exploding works out as:

0 – 6 min: It will be a sunny summer.

6 – 10 min: It will be a cloudy summer.

10 – 15 min: It will be a rainy summer.

15 minutes or more: It will snow in summer.

The origins of the festival date back nearly 500 years to the 16th century, when Zurich’s City Council – which at that time comprised exclusively members of various Zurich guilds – decided work should finish an hour later in summer than in winter, at 6pm rather than 5pm.  Prior to this people would continue working so long as it was daylight.

The day gets going at 3pm with the Sechseläuten Parade when 500 guild members on foot, 350 horsemen and 50 horse-drawn parade floats and 30 music ensembles march through the city.

At 6pm the huge bonfire in the middle of Sechseläutenplatz is set alight and everyone finds out what the weather will be like depending on how fast the Böögg’s head explodes.

Celebrations continue at 8pm with the ‘Unofficial Public Sausage Barbecue’ reputed to be the largest barbecue party in Switzerland.

Sechselaeuten, Umzug

The ceremony originally took place on the first Monday after the vernal equinox, at the end of March. In 1952, it was moved to the third Monday of April. However, if this day falls on Easter Monday, the festival is held a week later.

This year however, that rule doesn’t seem to apply, as it’s scheduled for April 8th, 2019, rather than the third Monday of the month a week later on the 15th and a week before the very late Easter Monday this year, the fourth Monday of the month, on the 22nd April.


The ceremony has not always gone off without a hitch.  In 1921, a young lad – allegedly incited by communists – set fire to the Böögg early and unofficially at 1.30pm and in 1950, 1960, 1993 and 1994, the Böögg fell off the pyre before its head had exploded. Then in 2006, the Böögg was abducted by a group of leftist revolutionaries. It reappeared at the Swiss Labor Day festivities on May 1, then disappeared again before eventually turned up in the cellar of a school building. Nevertheless, the burning of the Böögg still went ahead as scheduled – using an emergency back-up Böögg.

Is the Böögg’s head exploding weather prediction ever correct? Well, no one seems to have kept accurate records, but the organisers are keen to point to 2003 when his head exploded in a record-breaking 5 minutes, 42 seconds, correctly predicting the extremely hot summer of that year.